1st International Conference on Chemo and BioInformatics, ICCBIKG 2021, (121-124)
AUTHOR(S) / АУТОР(И): Julijana Blagojević, Olga Govedarica, Kojić Predrag, Oskar Bera, Mirjana Jovičić, Sonja Stojanov, Jelena Pavličević, Dragan Govedarica
E-ADRESS / Е-АДРЕСА: julijana.blagojevic@uns.ac.rs
DOI: 10.46793/ICCBI21.121B
ABSTRACT / САЖЕТАК:
Good selection of natural rubber compounds is substantial in rubber industry. Behavior of products based on natural rubber is determined by rubber blending components, especially nature of process oil and concentration of reinforcing fillers. Rubber process oil main purpose is to improve dispersibility of fillers and reduce the viscosity of the rubber compound, therefore enable better processing. Mineral oils are mostly used process oils in natural rubber compounding, but, due to their toxicity and new requirements for preservation of the environment, more and more well-known manufacturers have turned to the use of environmentally friendly process oils. In this study, influence of the hempseed oil as process oil on the products properties in natural rubber compounding was investigated. Properties of hempseed oil as process oil were experimentally determined or calculated. Blending of natural rubber was performed in a laboratory by internal batch mixer, at the constant temperature of 90°C and a rotor speed of 60 rpm. Main rubber properties such as hardness, tensile strength, elongation at break, modulus at 100 and 300% elongation, and rheological properties were determined. Also, voltage and amperage were experimentally measured for calculating power consumption during effective mixing phase in rubber blending.
KEY WORDS / КЉУЧНЕ РЕЧИ:
natural rubber, environmentally friendly process oil, hempseed oil
REFERENCES / ЛИТЕРАТУРА:
- S. H. El-Sabbagh and A. A. Yehia, “Detection of crosslink density by different methods for natural rubber blended with SBR and NBR,” Egypt. J. Solids, 30 (2007) 157-173.
- V. Tanrattanakul and A. Petchkaew, “Mechanical properties and blend compatibility of natural rubber -Chlorosulfonated polyethylene blends,” J. Appl. Polym. Sci., 99 (2006) 127-140.
- D. Govedarica, N. Sovtić, O. Bera, P. Kojić, O. Govedarica, M. Jovičić and J. Pavličević., “The influence of extender oil properties on rubber performances,” Appl. Solid State Chem., 1 (2018) 2- 6.
- M. Öter, B. Karaagac, and V. Deniz, “Substitution of aromatic processing oils in rubber compounds,” KGK Kautschuk Gummi Kunststoffe, 64 (2011) 48–51.
- M. C. Delpech, I. L. Mello, F. C. S. Delgado, and J. M. Sousa, “Evaluation of Thermal and Mechanical Properties of Rubber Compositions Based on SBR Extended with Safe Oils,” J. Appl. Polym. Sci., 125 (2012) 4074–4081.
- A.Kuta, Z.Hrdlička, J.Voldánová, J. Brejcha, J. Pokorný, and J. Plitz, “Dynamic Mechanical Properties of Rubbers with Standard Oils and Oils with Low Content of Polycyclic Aromatic Hydrocarbons,” KGK. Kautschuk, Gummi, Kunststoffe, 63.4 (2010) 120-122.
- G. Chandrasekara, M. K. Mahanama, D. G. Edirisinghe, and L. Karunanayake, “Epoxidized vegetable oils as processing aids and activators in carbon-black filled natural rubber compounds,” Natl. Sci. Found. Sri Lanka, 39 (2011) 243–250.